音おん速そく

noun

speed of sound; sonic speed

Scientific and everyday term for the speed at which sound travels through a medium. Often used in compounds like 音速の壁 (sound barrier) or 超音速 (supersonic).

• 音おん速そくは空くう気き中ちゅうで約やく340メートル毎まい秒びょうです。

  The speed of sound in air is about 340 meters per second.

• その飛ひ行こう機きは音おん速そくを超こえた。

  The airplane exceeded the speed of sound.